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Description: Returns the Bessel function Yn(x), which is also called the Weber function or the Neumann function.
Syntax: BESSELY(Number, Order)
Number is the value at which to evaluate the function.
Order is the order of the function.
Remarks:
Number must be numeric.
Order must be numeric.
Order must be >= 0 and an integer.
The n-th order modified Bessel function of the variable x is:
where
Example:
Compute the Bessel function at x = 2.5 and an order of n = 1.
BESSELY(2.5, 1) = 0.145918
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